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C. B. THORNE.

LOG BARKER. AND THE LIKE.

APPLICATION FILED MAR. 29. 1921.

Reissued July 5, 1921.

C. B. THURNE.

LOG BARKER AND THE LIKE.

APPLICATION FILED MAR. 29, I921-- I Reissued July 5, 1921. 1 5, 144;.

4 SHEETSSHEET 2.

INVENTOR c. B. THORNE.

LOG BARKER AND THE LIKE.

APPLICATION FILED MAR. 29,

Reissued July 5, 1 921.

INVENTOR 9107440 yflaw/zy Z ATTORNEY C. B. THORNE.

LOG BARKER AND THE LIKE.

APPLICATION FILED MAR. 29, I921.

Reissued July 5, 1921. 1 5, 1 44.

4 SHEETS-SHEET 4.

FIGJB Hill! NW! NW INVENTOR any; MA A TTOR NE Y Fig}. tlve rive an -UNITED STATES PATENT eOFFlCE.

CARL IBUSCH THOBNB, OF HAWKESBURY, ONTARIO, CANADA.

LOG-BARKER AND THE LIKE.

Specification of Beissued Letters Patent. Reissued J uly 5 1921 Original No. 1,319,935, dated October 28, 1919; Serial No. 286,138, filed March 29, 1919. Application for reissue filed March 29, 1921.

To all whom it may concern:

Be it known that I, CARL Boson THoRNE, a subject of the Kingv of Norway, residing at Hawkesbury in the Province of Ontario, Dominion of danada have invented a new and useful Improvement in Log-Barkers and the like, of which the following is a specification.

The invention relates to log barkers and the like as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially of the novel construction and arrangement of parts, whereb the logs are maintained continuousl an variously in rolling contact by circu ating them regularly in their progres's through the machine.

The ob ects of the invention are to remove the bark from logs of any length without injury to the log or waste of (good wood; to simplify the methods of han ling logs in barking operations; to efficiently strip the bark notwithstanding adverse Cllmatic conditions; to economize in labor and power; and generally to provide a serviceable and durable machine at a moderate cost for barkin clearing logs of ice and washing logs an for any other use in which rubbing action is desirable.

In the drawin Fi re 1 is a side elevation of the mac ine s owing hopper sides removed to disclose the movement of the 10 in their circulation.

ig. 2 is a lan view of the machine.

Fig. 3 is a etail of a cam.

Fi 4 is an elevation of the machine at the elivery end.

Fig. 5 is an elevation of the machine at the feeding end.

Fig. 6 1s a detail of a hopper showing another mechanism for creatmg the circulatory movement of the logs.

" Fig. 7- is a detail of a hopper showlng another modification.

Fig. 8 is a detail of a hopper showing another modification.

Fig. 9 is a detail of a another modification.

Fig. 10 is a. detail of a hopper showing another modification.

' 11 is a lan view showing an alterna- (i the corresponding positions of the displacing cams.

hopper showing Serial No. 456,691.

Fig. 12 is a detail of a hopper showing a preferred form of rear wall.

Fig. 13 is a plan view of the bark drain- I curved and sloping front walls 4 terminatin at the side walls 5 and the lower ends 0 the said front walls forming bottom portions for the hoppers and meeting the rear walls 6 which extend upwardly to the top of the side walls in a plurality of inclined sections. The lower and greater inclined sections 7 of the rear walls and the lower curved slopingportions of the front Walls form the bottoms of the hoppers. The lower inclined sections or bottom portions 7 are provided with cam slots 8 and 9 which register with correspondin slots in lateral portions of the front wal s 4 and each pair of registering slots forming a single continuous opening or slot extending across the bottom of the hoppers from fronf to rear.

The said hoppers are made in any suitable number, in some cases only one is necessary, while in others the number of hoppers depends on the condition of the bark and consequently the difficulties it offers toward removal. These hoppers are preferably lined .with boiler plate and constructed of tim- The inclined'platform 14is the connection between hopper 1 and ho per 2 and the inclined platform 15 is tlie connection between hoppers 2 and 3.

The runway, 16 is the-delivery platform and leads from the top 'of the rear wall of the hopper 3 and terminates the path of the log throu h the machine starting from the feed platform 12.

The endless chain carrier 17 carries the log along the platform 12 up to the inclined wa 13.

he sprocket wheels 18 and 19 are jour-. naled in suitable bearingssupported by the structure and carry the chain 17.

The structure supporting the hoppers and operating machinery is ,cons tructed on'the concrete bed 20. The bearings 21 are supported above the bed Qtland from the longitudinal girders and line up with the cam shaft bearings '22 secured to the hopper structure adjacent to the slots 8 and 9.

The cam shafts 23 are journaled in the bearings :21 and 22 and at their outer ends carry the gears 24, which are necessarily of considerable size to insure a regular and comparatively slow rotatory movement to each of said shafts.

The bearings 25 are suitably supported above the concrete bed and the pinion shafts 26 are journaled in said bearings. saidshatts 26 carrying the pinions 2T coacting with the .gears 24. The pulleys 28 are also. fixedly mounted on the pinion shafts 26 and are operatively[connected to the motor 29 by the belts 30.

The sprinkler pipes 31 are "supported.

above each hopper and are connected to a suitable water supply.

The cams 32' are mounted on the cam shafts 23 and in turning enter the slots 8 and 9. said cams having a receding face 33 and 34 at the ends" from the direction of ro-- tation. so that in turning these faces 33 and 3% each engage the logs and leave them to drop behind the cams. which are correspondingly recessed at 36 and 37.

The cam openings in the bottoms of the hoppers lead into. a drain trough 38. which slopes downward-1y in the direction of the delivery end of the machine and receives the water and bark from the hoppers.

At its lower end the trough 3S empties into the transverse trough 39. inwhich the scraping conveyer -10 operates. said conveyer being formed of the chains 41 carrying the scrapers 42- and turning, with the sprockets -13. whlch' are suitably driven.

The bottom of the trough 3S is perforated.

therefore the water is drained off and the bark conveyed to its delivery point for use as fuel or in the manufactures.

In the operation of this invention. the logs are first directed to the feed carrier and by means of this carrier deposited at or near the inclinedway leading into the first hopper. v i

The logs fall. down and as the hopper fills. the cams are covered in. but at each revolution they displace and roll several logs. in fact they continuously make .place for the fall of'a number of logs. thus creating a disturbance thatbrings the constantly feeding logs from behind the cams to aposition thereabove. where their contact with said camsrolls them around. so that they rub hard against the logs immediatelythereabove andat this. point the most effective work in the operationv is. accomplished. The logs gradu'allywork up and around so etticiency is often increased. though on the other hand too many hoppers may injure the wood. therefore under some conditions the rubbing operations in each hopper may be lengthened and this" can be done by delaying the feed. This construction materially facilitates the work of the attendant in adjusting operations to insure efficiency under varying conditions.

The main feature of the invention is the making of a hole or creating a space. into which the logs must fall. thereby causing a continuous movement among the logs. in other words. insuring a circulation that will bring every log at time in contact with the disturbing element and impart to said log the desired roll. which hasso much to do with removing the bark.

As the disturbance of the logs. preferably at a given point. is essential to the operation of the machine it is obvious that this may be done by other mechanical means than the'rotating cams hereinbefore described, as for instance. in Fig- 6. a reciprocatory machine is used in which AA is a cylinder connected to a suitable supply of expansile fluid and having a piston therein connected wit-h the rod 5 and cross head 46. the latter being connected to the oscillatory rod. 47, which operates the pusher 48. v a j The pusher or pushers. as'there may be more than one. engage the logs and accomplish the purpose for which the cams are used. a A

In Fig. 7 another displacing mechanism is shown and is similar in. many ways to the cams described. for it consists of a succession of rotors -19. suitably. driven. and having pins 50 or teeth or any projections. which will engage and lift, the logs.

I In Fig. 8 the toothed chain 51 is shown as extending through a slot in ,the lower section of the rear wall in a similar manner to the cam and forming the disturbing element and this carries the logs continuously.

In Fig. 10 a vibratory bar 53 is shown in the same upward reach of the rear wall, said bar having teeth 54 beveled forwardly from .a strai ht back wall.

shown and in this a driven shaft 55 is journaled parallel to the succession of hoppers and is driven by the motor 56, to which it is connected by the pulleys 57 and 58 and belt 59. The bevel gears 60 are mounted on the shaft 55 and coact with the bevel ears 61 which are mounted at the outer en s of the transverse cam shafts 62 and by this arrangement the cams may be maintained constantly in alternative operating positions, thereby materially reducing the load on the motor.

In Fig. 12 the rear wall is shown in three reaches, 63, 64 and 65 and in this construction it will be seen that a greater slope is given to the upper reach 65 than to the middle reach 64, consequently a'small log cannot force a larger log back into the hoper, thereby leaving the latter crowded with arge logs, because the center vertical line through the small log 66 is on the hopper side as compared with the center vertical line through the larger 10 67, which insures a constant push by t e small 10 on the bigger log in the direction of the dividing platform or wall from the next hopper in succession.

This mechanism is merely shown diagrammatically in the drawings and onl brieflydescribed, as'it is not an essentia feature in the invention.

The operation of the invention mafy be facilitated by relievin the hoppers o finished logs before reac ing the delivery end and by doingthis' the eflioiency may be greatly increased as smooth logs will not then interfere by delaying the contact of the bark covered logs with one another.

' Various changes ma be made in the construction 'of the machine without departing from the spirit of the invention, so long as said changes are within the scope of the claims for novelty following.

What I claim.is: 1. In a log barker and the like, a hopper having front and rear walls terminating in a slotted bottom portion and a driven rotatory member suitably journaled and in rotation entering the hopper through said slotted bottom portion and operating toward the rear wall.

' 2. In a log barker and the like, a hopper having front and rear walls terminating in a slotted bottom portion and a driven oscillato member projecting through the slotted l iottom and engaging the logs to keep them in a constant circulatory movement.

3. In a log barker and the like, a hopper having an opening at the lower rear end 05 thereof, a driven shaft journaled adjacent ig. 11 a modified form of drive is a to said opening, and acam shaped member fixedly mounted on said shaft and enterin said opening at each half revolution, an rolling the logs in contact therewith.

4. In a log barker and the like, a hopper having a plurality of openin at the lower rear end, a shaft suitably driven, and journaled adjacent to said opening, and cams mounted on said shaft and having log rolling faces receding from the direction of rotation and corresponding recesses on the inner sides, said cams entering said openings and engaging the logs in said hopper.

5. In a log barker and the like, a hopper having openings at the lower end of the rear wall in the bottom thereof, a water sprinkling device thereabove, and disturbing elements entering said openings and engaging the logs and creating a constant rolling movement and establishing a circulation of the logs in the hopper.

6. In a log barker and the like, a stationary hopper having a plurality of openin in the bottom, shaft bearings, a cam sha t journaled in said bearings and extending across the outside of said hopper adjacent to said openings, a gear on said shaft,.a pinion coacting with said gear, a ulley and elt connection to said pinion sha ,a motor driving said pulleys, and a plurality of 95 cams on said cam shaft engaging the logs in. the hopper and rolling the same at each operation.

7. 'In a log barker'and the like, a plurality of hoppers having o enings in the bottoms at the lower end of t e rear wall, disturbing elements entering said openings periodicallyand creating a regular and constant movement of the logs for rubbing purposes, a feeding platform, a sprinkling device over each hopper, connecting platforms between the several hoppers, and a runway from the last hopper.

8. In a log barker and the like, a succes- 'sion of hoppers having openings in the bot- 110 toms at the lowerends of the rear walls, a driven shaft suitably journaled alongside said hoppers, transverse shafts suitably journaled and extending across said openings, bevel ear connecting said driven and transverse s afts, a motor operatively connected with said driven shaft, and cams mounted on said transverse shafts in alternately operating positions respectively and in rotatlon entering said openings and enagin the logs.

9. n a log barker and the like, a hopper having a front sloping downwardly to the rear wall, the latter being formed in lower, middle and upper reaches, said upper reach having a greater inclination than said middle reach to facilitate the delivery of larger logs, and side walls closing in said front and rear walls, and means for agitating said logs.

lOgIn a log barker-and the like, a hopper having an opening in the bottom at the lower end of the rearside forming flushing and cam slots, rotating cams extending through said slots for disturbing said logs at short intervals and automatic means for receiving and discharging the bark removed from the logs free of the accompanying water;

11. In a log barker and the like, a hopper.

having front and rear walls and a bottom connecting the front and rear walls and provided with a single continuous slotextending across the central portions of the bottom, and a driven rotary member suitably journaled and in rotation entering and leaving the hopper through the said single slot and operating toward the rear wall.

'12; In a log barker and the like. a hopper having front and rear walls and a bottom connecting the front and rear walls and provided witha single continuous slot extending across the bottom from front to rear, and a driven rotary member suitably journaled and in rotation entering and leaving the hopper through said single slot and operating toward the rear wall.

13. In a log barker and the'like. a hopper having front and rear walls provided with inclined portions forming a continuous bottom for the hopper andprovided with registering slots forming a single continuous" opening extending across the bottom of the hopper from front to rear. and a driven rotary member suitably journaled and in rotation entering and leaving the through said single opening in the bottom of the hopper and operating toward the rear walls.

14. In a log barker and the like. a hopper having a curved sloping front wall and a rear wall having upper and lower inclined portions. the lower portion of the rear wall having a greater inclination than theupper portion thereof and the lower portions of the front and rear walls meeting and c011- stituting a continuous bottom for the hopper and provided with registering slots forming a single continuous opening extending across the bottomfrom front to rear, and a driven rotary member suitably journaled and in rotation entering and leaving the hopper through said single opening and operating toward the rear wall. I

15. In a log barker and the like. a stationary hopper receiving logs for circulatory and rubbing movement in direct contact with CARL BUSCH THORXE.

hopper 

